MAX4231

Features:

 30mA Output Drive Capability
Rail-to-Rail Input and Output
1.1mA Supply Current per Amplifier
2.7V to 5.5V Single-Supply Operation
10MHz Gain-Bandwidth Product
High Slew Rate: 10V/s
100dB Voltage Gain (RL = 100k)
85dB Power-Supply Rejection Ratio
No Phase Reversal for Overdriven Inputs
Unity-Gain Stable for Capacitive Loads to 780pF
Low-Power Shutdown Mode Reduces Supply
   Current to <1A
Available in 5-Pin SC70 Package (MAX4230)
Available in 10-Bump UCSP Package (MAX4233)


Application

RF PA Biasing Controls in Handset Applications
Portable/Battery-Powered Audio Applications
Portable Headphone Speaker Drivers (32)
Audio Hands-Free Car Phones (Kits)
Laptop/Notebook Computers/TFT Panels
Sound Ports/Cards
Set-Top Boxes
Digital-to-Analog Converter Buffers
Transformer/Line Drivers
Motor Drivers


Pinout




Specifications

Supply Voltage (V_DD to V_SS) ........................................................6V
All Other Pins .........................................(V_SS - 0.3V) + (V_DD + 0.3V)
Output Short-Circuit Duration to VDD or V_SS (Note 1) ..................1s
Continuous Power Dissipation (T_A = +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C).......................247mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C).....................571mW
6-Pin SC70 (derate 3.1mW/°C above +70°C).......................245mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ....................696mW
8-Pin SOT23 (derate 8.9mW/°C above +70°C) ....................714mW
8-Pin MAX (derate 4.5mW/°C above +70°C) ......................362mW
10-Pin MAX (derate 5.6mW/°C above +70°C) ....................444mW
10-Bump UCSP (derate 6.1mW/°C above +70°C) ................484mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) ..................727mW
14-Pin SO (derate 8.3mW/°C above +70°C) ........................667mW
Operating Temperature Range ..............................-40°C to +125°C
Junction Temperature...........................................................+150°C
Storage Temperature Range .................................-65°C to +150°C
Lead Temperature (soldering, 10s) .....................................+300°C


Description

The MAX4231 single/dual/quad, high-outputdrive CMOS op amps feature 200mA of peak output current, rail-to-rail input, and output capability from a single 2.7V to 5.5V supply. These amplifiers exhibit a high slew rate of 10V/s and a gain-bandwidth product (GBWP) of 10MHz. The MAX4231 can drive typical headset levels (32), as well as bias an RF power amplifier (PA) in wireless handset applications.

The MAX4230 comes in a tiny 5-pin SC70 package and the MAX4231, single with shutdown, is offered in the 6-pin SC70 package. The dual op-amp MAX4233 is offered in the space-saving 10-bump UCSP™, providing the smallest footprint area for a dual op amp with shutdown.

The MAX4231 is designed to be part of the PA control circuitry, biasing RF PAs in wireless headsets. The MAX4231/MAX4233 offer a SHDN feature that drives the output low. This ensures that the RF PA is fully disabled when needed, preventing unconverted signals to the RF antenna.

The MAX4231 offers low offsets, wide bandwidth, and high-output drive in a tiny 2.1mm x 2.0mm spacesaving SC70 package. These parts are offered over the automotive temperature range (-40°C to +125°C).